Independent-centrist Emmanuel Macron was sworn in as the 25th French President on Sunday.
He is the youngest president in the French history. According to reports, he is the youngest leader since Napoleon.
Talking to the media after the swearing-in ceremony, he said: “The world needs what the French have always taught. For decades France has doubted herself."
“But the world and Europe need France more than ever”, he said.
Macron came to power after defeating the far-Right National Front candidate Marine Le Pen in the presidential runoff on May 7.
During the swearing in ceremony, Macron was welcomed by his predecessor, Francois Hollande, when he arrived at the Elysee palace on Sunday.
The new president promised to kickstart the country's sluggish economy.
300 hundred invited guests, including trade union representatives and Nobel prize winners, took part in the event.
Earlier, during poll campaigning, Macron had promised a France that would stand up to Russian President Vladimir Putin but that also would seek to work with Putin on fighting the Islamic State group, whose extremists have claimed or inspired multiple attacks in France since 2015.
France has been in a state of emergency during election as 50,000 security forces safeguarded the polling.